ITC shock springs

[bigk]

I've heard that yellow ITC springs are a heavier rate than white ITC springs, can anyone confirm or dispel this please?
Cheers,
K

[motomaniac]

I heard that too Mick , can't confirm but I have a set if you want to try them out

[80-85 husky]

hey mick, ive heard from plenty that they are heaps better. no idea if they are heavier. the word is they don't sit as much as the white ones, have a bit more spring. (suggests a heavier initial rate)

[b490]

 Have the  yellow  pair  on my 83 XC 500 .
    Feel firmer than the white ones on my '83  250 & have slightly larger diameter coil as well.
    Got them here  ;   (spring rate listed on link)
 
  http://www.husqvarna-parts.com/catalog/item/3736874/3443083.htm
 
  Regards ,
                  Steve

[Wasp]

http://store.suspensionshop.org/husqvarna/mx/1980-1989/83-83-te-tc-springs-rear.html       Spring rate 25-45

[PEZBerq]

I've heard that yellow ITC springs are a heavier rate than white ITC springs, can anyone confirm or dispel this please?
Cheers,
K

e
Correct Mick. The 9mm dia wire 16 coil is the stiffest ITC direct replacement at 10% stiffer. The white springs are 8.5mm 16.5 coils

[bigk]

Cool, thanks guys. Need some stiffer springs and have some yellow ones here. All good.
K

[bigk]

So the plot thickens. I have 2 pairs of yellow ITC springs here (untouched originals), both are 8.5mm wire thickness with the same amount of coils as the white sets I have. Interesting to say the least.  I also have a set of non progressively wound springs with 8.0 wire thickness, 13 coils. These are supposedly a heavier rating but I really am uncertain. Walters springs are a good price, I'll do some testing with what I have but it looks like I may be giving him a call.
K

[80-85 husky]

got a pair of itc's without springs here mick if you want to test them....

[bigk]

Thanks Frank, I have an extra pair of shocks to test with.
Cheers,
K

[80-85 husky]

 

[PEZBerq]

So the plot thickens. I have 2 pairs of yellow ITC springs here (untouched originals), both are 8.5mm wire thickness with the same amount of coils as the white sets I have. Interesting to say the least.  I also have a set of non progressively wound springs with 8.0 wire thickness, 13 coils. These are supposedly a heavier rating but I really am uncertain. Walters springs are a good price, I'll do some testing with what I have but it looks like I may be giving him a call.
K

The 9mm progressive ITC springs have code 00180-40 L4813.

13 coil will be stiffer than 16 coil of same wire size.

[b490]

 As fitted to my XC500
 Ohlins  P/N:  00180-40 L3210      9mm  dia  wire   

  Looks to be 16 coil ;

Regards ,
                Steve

[Tony Two Times]

For what it's worth I took Curnutt springs from my OR390 to Marsh Springs here in Brisbane. Said I need these but 20% stiffer. Three days and $250 from memory. Just had to paint them myself.